A drawing of the outline of an object; filled in with some uniform color WordNet 3.0 & Open English WordNet

A silhouette is the image of a person, animal, object or scene represented as a solid shape of a single colour, usually black, with its edges matching the outline of the subject. Wikipedia

Image of a person, animal, object or scene represented as a solid shape of a single color, usually black, with its edges matching the outline of the subject. Wikipedia Disambiguation

Appearance and art form where only the outline of something is visible Wikidata

An illustrated outline filled in with a solid color(s), usually only black, and intended to represent the shape of an object without revealing any other visual details; a similar appearance produced when the object being viewed is situated in relative darkness with brighter lighting behind it; a profile portrait in black, such as a shadow appears to be. Wiktionary

Representation of the outlines of an object filled in with a black color. Wiktionary (translation)